Mr. Greco

 ATOMS

All matter is made up of
Atoms are far too small to be
Atoms and molecules are always in
Atoms move or vibrate faster at
Interactions between atoms and/or molecules result in	
The atom is made of 4 Subatomic Particles:
Atomic # tells you the
Atomic # is like a
Atomic Mass tells you the
Helpful Formula for determining the # of neutrons in an atom:
The term “subatomic” means
A proton is defined as a
A neutron is defined as a
An electron is defined as a
What is the heaviest (or most dense) part of an atom?
Most of an atom is made up of
Maximum # of electrons found in the first 3 energy levels of any atom?
Lithium has atomic # of 3 & atomic mass of 6.9, list # of subatomic particles.

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 All matter is made up of
atoms.
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 Atoms are far too small to be
seen with a compound light microscope.
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 Atoms and molecules are always in
motion.
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 Atoms move or vibrate faster at
higher temperatures.
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 Interactions between atoms and/or molecules result in	
the formation of compounds.
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 The atom is made of 4 Subatomic Particles:
Protons, Electrons, Neutrons, and Quarks.
(PENQ: Thanks to AR)
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 Atomic # tells you the
# of protons inside the nucleus of an atom.
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 Atomic # is like a
social security #.
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 Atomic Mass tells you the
# of protons    +   the # of  neutrons inside the nucleus of an atom.
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 Helpful Formula for determining the # of neutrons in an atom:
  ATOMIC MASS (# OF PROTONS + # OF NEUTRONS) 
–    ATOMIC # (# OF PROTONS) 
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              # OF NEUTRONS
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 The term “subatomic” means
smaller than an atom.
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 A proton is defined as a
positively charged particle found in the nucleus with a mass
of 1 atomic mass unit.
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 A neutron is defined as a
neutrally charged particle found in the nucleus with a mass
of 1 atomic mass unit.
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 An electron is defined as a
negatively charged particle found around the nucleus with a mass
of 1/1836 atomic mass units.
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 What is the heaviest (or most dense) part of an atom?
The nucleus!
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 Most of an atom is made up of
empty space!
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 Maximum # of electrons found in the first 3 energy levels of any atom?
A maximum of 2 electrons in the first energy level, a maximum of 8 electrons 
in the 2nd energy level, and a maximum of 8 electrons in the third energy 
level.
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 Lithium has atomic # of 3 & atomic mass of 6.9, list # of subatomic particles.
3 Protons

3 Electrons

4 Neutrons (Because Atomic Mass - Atomic # = # of Neutrons)
                         7      -     3    =      4
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